把下面的问句与相应的答句配对,把所选的序号写在括号里。
There_____a clock here before. A.was B.is C.are
These bags ___________big. A.are B.is D.am
There was a house here______. A.after B.before C.now
Halloween is ___ autumn festival. A.a B.× C.an
They give __________sweets. A.them B.they C.their